#应收应付减去退货售后(只相信商品数量和单价,根据这些具体自己计算)
SELECT
a.order_sn,
SUM( b.discount_amount ) AS sum_discount_amount,
SUM( b.discount_amount - COALESCE ( tmp1.tui_money, 0 )
#应收应付减去退货售后(只相信商品数量和单价,根据这些具体自己计算)
SELECT
a.order_sn,
SUM( b.discount_amount ) AS sum_discount_amount,
SUM( b.discount_amount - COALESCE ( tmp1.tui_money, 0 )